Potential spoilers ahead, as it's in the Chapter Finale.*** Spoiler - click to reveal ***During the Finale of the final chapter, after you speak to Sugiara outside of your office, and the game warns you about the finale of the game, you'll deal with some fights, some happenings, until ultimately you're at the court case.
This is the case where you need to make 4 critical choices, otherwise you will miss this trophy. I will list the choices below in order of appearance.
First Choice -
It created cushy retirement positions.
Second Choice -
Shintani’s Phone Log. The picture of the phone.
Third Choice -
Shono’s Connection to the Kyorei Clan Murders
Fourth Choice, which will show up after a cutscene flashback -
Hamura and Ichinose’s Missing Link
After selecting Reveal the Evidence! on the final option, the trophy should immediately pop.